metadata: Include config.h in metadata*.c files

Include config.h in metadataexif.c in metadata plugin so
that HAVE_EXIF gets defined and exif metadata is properly
generated.

Also adds config.h to all .c files missing it in metadata plugin

Fixes #622692

ext/metadata/metadataexif.c

@@ -58,6 +58,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadataexif.h"
 #include "metadataparseutil.h"
 #include "metadatatags.h"

ext/metadata/metadataiptc.c

@@ -58,6 +58,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadataiptc.h"
 #include "metadataparseutil.h"
 #include "metadatatags.h"

ext/metadata/metadatamuxjpeg.c

@@ -76,6 +76,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadatamuxjpeg.h"
 #include "metadataxmp.h"
 

ext/metadata/metadatamuxpng.c

@@ -76,6 +76,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadatamuxpng.h"
 
 #include <string.h>

ext/metadata/metadataparsejpeg.c

@@ -78,6 +78,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include <string.h>
 
 #include "metadataparsejpeg.h"

ext/metadata/metadataparsepng.c

@@ -65,6 +65,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadataparsepng.h"
 #include "metadataparseutil.h"
 

ext/metadata/metadataparseutil.c

@@ -52,6 +52,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadataparseutil.h"
 #include <string.h>
 

ext/metadata/metadatatags.c

@@ -59,6 +59,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadatatags.h"
 
 /*

ext/metadata/metadatatypes.c

@@ -53,6 +53,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadatatypes.h"
 
 #include <string.h>

ext/metadata/metadataxmp.c

@@ -65,6 +65,9 @@
  * includes
  */
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
 #include "metadataxmp.h"
 #include "metadataparseutil.h"
 #include "metadatatags.h"